Blight in Blighty

Blight in Blighty

What does this mean: A full Smith Period has occurred if, on each of 2 consecutive days:
the minimum air temperature was at least 10oC, and
there were a minimum of 11 hours with a relative humidity of at least 90%
What to do: Read up – look further too – all sorts of things depending on your slope/aspect etc or you might just be a home tomato grower (fix any leaks etc) http://apps.rhs.org.uk/advicesearch/profile.aspx?PID=217